Tellurite And Fluorotellurite Glasses For Active And Passive

7. Surface properties; MDO 303
Fig. (7.35) shows optical micrographs of glass MOF005 (70TeO2-10Na2O-20ZnF2 mol.
%), treated for 1 min. in various solutions: 4% HF, 7% HNO3, 8.5% H3PO4, and 10%
CH3COOH. These solutions were made by diluting the corresponding concentrated acid
listed in table (7.1) in a 1:10 volume ratio with distilled water making a 100 ml solution.
(see section 7.1.2.1 for further experimental details).
20 µm
(a) 4% HF (b) 7% HNO3
(c) 8.5% H3PO4 (d) 10% CH3COOH.
Fig. (7.35): Optical micrographs of glass MOF005 (70TeO2-10Na2O-20ZnF2 mol. %),
treated for 1 min. in: (a) 4% HF, (b) 7% HNO3, (c) 8.5% H3PO4, and (d) 10% CH3COOH
(all micrographs the same scale).